didn't work with multiple other addons, but this one did. had to type about:config into the url bar & change "browser.fullscreen.autohide to "true" by double clicking "false" to change it to "true."

i had this installed, but it wasn't working until i changed that preference. i hope that helps someone.

Супер аддон!
Мне нужен был полноценный браузер для моего телевизора на AndroidTV. Firefox единственный подошел для этого. Но стандартное скрытые панели не работало. Я перепробовал 7 расширений и только это помогло мне.

This is the only addon I found to work with the android browser which does not add annoying persistent on-screen buttons to the web pages. Just works. To enter fullscreen, open the menu, click addons and then the name of this addon. Thank you!

Works perfectly to stop toolbars and tabs from displaying when you hover mouse at top of screen.

I had been finding it very annoying when working in full screen to push the mouse "away" to the top and suddenly the toolbars and tabs appear.

Doesn't work on mozilla.org (like many other extensions) because they block the overlay to initiate it, but it works on all the sites I need it to work on.

tried a few other full screen add-ons, this one is the first i found that works just as described... (using macbook m1 os13.0.1) thank you!!! (of course keyboard shortcut would be helpful but more then worth the 'two clicks')

This add-on adds Full screen for Mac users (PC users achieve the same result with Fn11). It works great but I suggest removing the "second click" as it adds no functionality and is just annoying.

It works exactly as promised on my old Mac OS (10.11.6 El Capitan); tabs and address bar are hidden. Highly recommended. Thank you so much for creating what other fullscreen add-ons promise but usually fail to deliver.

Simple and effective. Good job. Thanks

Doet wat het moet doen!

Thank you very much kind sir for this fabulous extension. Running on 2020 Macbook air

ottima estensione

Very useful, specially Mac Users consider installing it.